The Astros have successfully locked up one of their key building blocks, as Brian McTaggart of MLB.com reports that they have agreed to a long-term contract extension with second baseman Jose Altuve. This marks the first major contract commitment under the leadership of general manager Jeff Luhnow, who was hired in December of 2011.

No word yet on the financial details, but the deal is expected to be announced later today. Altuve wasn’t due to become arbitration-eligible for the first time until after the 2014 season. McTaggart speculates that the extension will at least cover his arbitration years, though it’s possible the Astros also bought out a free agent year or two.